SHANGHAI (Reuters) - The head of China's Center For Disease Control and Prevention (CDC) on Saturday urged the World Health Organization (WHO) to return to a "scientific, fair" position in tracing the origin of COVID-19.

At a news conference, Shen Hongbing warned the WHO against politicising the source of the virus, which was first detected in central China in late 2019, or becoming a tool of another country.

(Reporting by Shanghai Newsroom; Editing by William Mallard)